The present invention is designed to suitably reduce the degradation of spectral efficiency even when communication is performed using a waveform of a single-carrier transmission scheme. According to one aspect of the present invention, a user terminal has a receiving section that receives a downlink control signal, which schedules transmission of a data signal in accordance with a waveform that is based on a single-carrier transmission scheme, and a transmission section that transmits a sounding reference signal, which is different from an uplink sounding reference signal used in existing LTE and which has a wider transmission bandwidth than the data signal, by using the waveform based on the single-carrier transmission scheme.

A method and apparatus for power control for wireless transmissions are disclosed. A wireless transmit/receive unit (WTRU) may reduce transmission power to channels for carrier aggregation such that a total transmit power of the WTRU is smaller than or equal to a maximum transmission power level in all symbols of a transmission. Further, transmission power may be allocated to the channels for carrier aggregation based on priority. Also, transmission power may be allocated to a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH) with uplink control information over a PUSCH without uplink control information. Moreover, transmission power may be allocated to a PUCCH or a PUSCH over a sounding reference signal (SRS) transmission. Additionally, the WTRU may transmit data over one or more channels, of the channels for carrier aggregation, at the respective transmission power allocated to the one or more channels.

A technique for power control including receiving, by a user device, a resource block allocation for uplink transmission that includes one or more resource blocks within a frequency channel; determining at least one resource allocation region or which an uplink resource block allocation within the resource allocation region will require an additional maximum power reduction (e.g., to reduce interference to a protected frequency band); and applying, by the user device, the additional maximum power reduction for a transmission power of the user device based on the resource block allocation being within the at least one resource allocation region.

Methods, systems, and devices for wireless communication are described. Generally, the described techniques provide for efficiently performing dynamic power control with minimal complexity in a dual connectivity mode. In particular, a user equipment (UE) may determine the reserved power (or maximum available power) for uplink transmissions on one or more cells in one cell group to a base station based on the total power available to the UE and the minimum reserved power for uplink transmissions on one or more cells in another cell group. Once the UE determines the reserved power for conflicting uplink transmissions on one or more cells in a cell group, the UE may allocate the reserved power to each uplink transmission on the one or more cells in the cell group (e.g., based on a priority of each of the uplink transmissions).

Embodiments of the present disclosure provide methods and apparatus for power control in random access procedure. A method implemented at a terminal device comprises obtaining at least one power control parameter to be used for a request message for a contention free random access, CFRA. The method further comprises transmitting, to a network node, the request message for the CFRA. A power of the request message for the CFRA is controlled based on the at least one power control parameter. The request message comprises: a random access channel, RACH, preamble and a physical uplink shared channel, PUSCH.

There is provided a method in a wireless device. The method comprises: receiving a Media Access Control (MAC) Control Element (CE) from a network node, the MAC CE comprising a plurality of octets and a plurality of fields, wherein a first field of the plurality of fields is used to indicate a number of sets of power control parameters in a last octet of the received MAC CE, the sets of power control parameters being associated with a reference signal used for path loss estimation; and sending a transmission to a network node, based at least on a set of power control parameters associated with the reference signal.

The present disclosure discloses an electromagnetic radiation safety control method, which belongs to the field of wireless communication technologies. The method includes: a terminal obtains a transmit power threshold according to a service requirement of service transmitted with a base station, performs a step of detecting a relationship between a beam direction and a position of a human body when a relationship between a current transmit power of the terminal and the transmit power threshold meets a specified condition, and reports safety control information to the base station when it is detected the relationship between the beam direction and the position of the human body meets a predetermined relationship, so as to instruct the base station to perform a control operation related to electromagnetic radiation safety.

Disclosed is an electronic device including a wireless communication circuit configured to support communication connections to one or multiple devices, at least one processor, and a memory which stores instructions causing, when executed, the at least one processor to identify whether a first communication connection to a second external device through the wireless communication circuit is disconnected, acquire, if disconnection of the first communication connection is identified, communication state information from a first external device connected through the wireless communication circuit, identify, based on the acquired communication state information, whether a second communication connection between the first external device and the second external device is disconnected, and operate in a loss occurrence mode for the second external device if disconnection of the second communication connection is identified.

Aspects of the disclosure provide methods and apparatus for dynamically assigning signal paths to multiple subscriptions in a user equipment (UE) that supports dual subscription dual active (DSDA) communications. The dynamic assignment of signal paths provide dynamic implementation of power classes for uplink transmissions based on communication parameters of the networks associated with the dual subscriptions.

Presented herein are techniques to shield transmissions from being received and the information contained in them recovered by unwanted devices. Multi-user multiple-input multiple-output (MU-MIMO) techniques are employed, and in particular the spatial dimension aspects of those techniques. Shield nodes are controlled to transmit in a way to obscure the downlink streams transmitted by a wireless access point that are intended for a particular client device to anything outside of the shielded area, and also to obscure uplink streams from one or more client devices to the wireless access point to anything outside of the shielded area but allowing the uplink streams to be well received by the wireless access point.